Feed-water heater



(No Model.)

, G. MILES.

FEED WATER HEATER,

N, PETERS. Fholvulhugnphar. Washingtun, n. C.

UNITED STATES PATENT OFFICE.

GEORGE MILES, OF WELLESLEY HILLS, MASSACHUSETTS.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 267,797, dated November 21, 1882.

Application filed March 4, 1882. (No model.)

To all whom it may concern:

Be it known that GEORGE MILES, of Wellesley Hills, in the county of Norfolk and State of Massachusetts, have invented a new and useful Improvement in Feed-Water Heaters, of which the following is a specification.

My invention relates to an improved means for heating feed-water or other fluids by ex haust-steam.

My invention consists of an apparatus composed of a large central pipe to which exhauststeam is conducted from an engine, and a series of smaller pipes arranged within a waterchamber, and connected at their lower ends with a tube-sheet, and at their upper ends to the tube-sheet of a chamber which is independent of any otherconnection, so that as the A is the inlet for the exhaust-steam, and is' connected by a suitable pipe with the engine.

G G represent a space, into which the steam descending through the small tubes F enters and passes out at the outlet A. The inlet pipe or space A and the space G G are formed in a base, L L, all being cast in. one piece.

D is the lower tube-sheet, in which are secured the lower ends of the tubes F F, and is designed to be boltedto the base L. It is shown in the drawings as raised up 0d the base. The upper ends of the tubes F F are secured to an upper tube-sheetor expansion-head, I), which, in connection with a cover, E, forms a supplementary chamber, 0, as shown. This construction admits of the free expansion and contraction of the tubes longitudinally without any liability of interfering with or loosening the tubular connections.

H represents the outer shell of the feed-water chamber, having a cover, N, provided with an outlet, K, for the feed-water, and to be connected with any suitable pipe. The lower portion of the shell H is secured to a base, M, which is to be bolted to the lower tube-sheet, D, (shown in the drawings as raised above the same,) and also to the base L.

J indicates the inlet for the feed-water.

I I represent the feed-water space.

The tubes B and F, itwill be seen, are secured at their lower ends to a separate tubesheet, D, and at their upper ends to the tubesheet D, the latter, with chamber U and tubesheet D, being entirely disconnected with and independent of the shell H and base-piece M, which latter and the tube-sheet D and base L are bolted together when prepared for opera tion.

In operation the exhaust-steam, being introduced at the inlet A, passes up through the central tube, B, into the chamber 0, and from thence down the tubes F F into the space G in the base L and out at the outlet A. The feed-water enters at the opening'J in the base M, and passes out at the outlet K at the upper end of casin g H.

The apparatus above described may also be used as a condenser or cooler.

What I claim as my invention is- 1. In a feed-water heater, the combination of a central enlarged pipe, B, the chamber (3,

pipes F, and easing H, said pipe B connecting chamber 0 with the inlet A, substantiallyas shown and described.

2. The combination of the upper tube-sheet, D, the tubes B and F F, attached to the separable tube-sheet D, and the base L, containing the inlet-passage A and outlet G, as and for the purpose specified.

3. The combination of the base M, the shell H, the separable tube-sheet D, the tubes B F, and the base L, as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE MILES. Witnesses ll J 0s. H. ADAMS, GEo. L. LAVERY. 

